蜘蛛侠

极目新闻记者 曹雪娇8月22日晚，第二届世界人形机器人运动会在国家速滑馆“冰丝带”开幕。    PARIS -- PARIS (AP) — A man armed with a knife killed a teacher and wounded two others on Friday at a high school in northern France, an attack being investigated as potential terrorism.Antiterror prosecutors said they were leading the investigation into the attack at the Gambetta high school in the city of Arras, some 115 miles (185 kilometers) north of Paris.Sliman Hamzi, a police officer who was one of the first on the scene said the suspected attacker, a former student at the school, shouted “Allahu Akbar” — God is great in Arabic.Hamzi said he was alerted by another officer who was passing in front of the high school and called in. He “was shouting ‘someone is attacking with a knife,’” Hamzi saidHamzi said he rushed to the school and saw the victim who died lying on the ground outside the school and the attacker being taken away. “Colleagues arrived quickly but unfortunately couldn’t save the victim,” Hamzi said.Interior Minister Gerald Darmanin said that the suspected attacker had been arrested. President Emmanuel Macron was heading to the scene along with the interior and education ministers, and the government asked authorities to heighten vigilance at all schools across France.Such school attacks are rare in France. The motive was not immediately clear. It came amid heightened tensions around the world over Hamas' weekend attack on southern Israel and Israel's military response, which have killed hundreds of civilians on both sides. There have been calls in Muslim nations for mass protests after Friday prayers over Israel’s intense bombing campaign in Gaza. Darmanin on Thursday ordered local authorities to ban all pro-Palestinian demonstrations amid a rise in antisemitic acts since the Hamas attack.France is estimated to have the world’s third-largest Jewish population after Israel and the U.S., and the largest Muslim population in Western Europe.The attack came almost three years after a teacher was beheaded outside a school in suburban Paris. Samuel Paty, a history and geography teacher, was murdered by an 18-year-old of Chechen origin who had become radicalized.A vice president of France's lower house of parliament, Naima Moutchou, said the National Assembly “expresses its solidarity and thoughts for the victims, their families and the educational community as we learn that a teacher has been killed and several others have been injured.″。开幕式后，本届运动会400米（大型组）预赛继续举行。记者在现场看到，大型组400米预赛分8场进行，首次出场的队伍有两队选手。发令枪响后，两台机器人应声而动，双腿飞速交替，向着终点疾驰。

二 | 遗憾的是，在跑过最后一个弯道时，其中一名机器人选手摔倒后身体冒出火花，未完成比赛。

机器人选手摔出火星子（图源：记者拍摄）第二场中，单独参赛的机器人选手未跑出第一个弯道便摔倒在地，最终由工作人员带走。第三场小组单独参赛的选手在过了两个弯道，冲击第三个弯道前摔倒，还划破了跑道。

摔倒躺平的选手（图源：记者拍摄）经工作人员紧急抢修后，天工队机器人作为第四场预赛选手出场，跑出39秒7的好成绩，打破去年88秒03的纪录，在现场引起观众阵阵欢呼。剩余4场预赛中，大部分机器人选手也顺利完赛。

三 | 不过，第五场预赛中天链队选手疑似没有听到发令枪枪声，一直站在起点没动，直到同场竞技的两位选手跑了一圈完赛，三名选手再次会合。此外，第八场选手在冲击第二个弯道时摔倒，不过最终又站起来重新完赛，完成冲线后，撞上赛场设备，身体被撞得四分五裂。

四 |